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Organic Borates

SHOWA DENKO 's organic borates have a structure and characteristics as described below:


Structure & Physical characteristics
fig
Grade P3B N3B
Z-
CAS No. 120307-06-4 219125-19-6
Melting point (c) 140-144 140-141
Solubility (g/L)
Methanol
Acetone
DMSO
16.2
1,040
> 50
0.7
> 100
> 50
Toxicological information LD50
Ames test
>2,000 mg/kg
Negative
>2,000 mg/kg
Negative



Applications
When used in combination with specific sensitizing dyes, our organic borates can cause polymerization and decoloration, as follows:
fig

(1) Polymerization
RE + M(Monomer)

RME

RM + M RMnE

(2) Decoloration
RE + DyeE

Dye-R
decolored

 



The following are typical examples of applications
Polymerization
N3B, one of the organic borates in the table on Page 1, is mixed with a sensitizing dye having its absorption band in the visible region. The composition is added to multifunctional monomers and acrylic resin to form a film of about 10 m. The film shows high sensitivity to g-, h-, and i-rays. The sensitivity is especially high with regard to g- and h-rays.

fig

Decoloration
A composition is made by mixing BP3B, another organic borate, with a dye that absorbs near infrared rays of up to 822 nm in wavelength (IRT). When the composition is irradiated with near infrared rays, IRT's coloring system disappears.

fig

fig


The information contained herein is based upon data considered true and accurate. However, SHOWA DENKO K.K. accepts
no responsibility for any liability or risk which may result from the handling and use of products.





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